Here’s another classic Amsterdam bicycle child seat, this time true to the Dutch minimalist spirit. Two chunks of wood and a small piece of an old backpacker’s sleeping pad… almost certainly all found in the trash.
The bike’s also worth a look: A well-worn "opafiets" (grandpa bike) at least 50 years old with the front carrier from a baker’s bike.
Note that the handlebar is long gone. In its place the owner has attached a piece of steel tubing to brackets bolted to the front rack. This was quite solidly, if not attractively, performed and judging from the patina it’s been this way for decades.
There are lots of other nice Amsterdam touches: